Railway-car brake.



No. 868,970. PATENTED OCT. 22. 1907. S. A. GRONE.

RAILWAY GAR BRAKE.

APPLICATION mum JULY 25. 1901.

2 SHEETS-SHEET 1.

INVENTOR WITNESSES:

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PATENT "oi rion.

SETH A. ORONE, OF NEW YORK, N. Y.

RAILWAY-CAR BRAKE.

Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed July 25, 1907. Serial No. 385,402.

To all whom it may concern:

Be it known that I, SETH A. CRoNE, a citizen of the United States, and a resident of New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Railway-Car Brakes, of which the following is a specification. The invention relates to improvements in railwaycar brakes, and consists in the novel brake-shoe head hereinafter described, and particularly pointed out in the claims.

The object of the invention is to provide a highly ellicient, durable and safe brake-shoe head capable of economical manufacture; and to this end, in the preferred construction, I construct the head of forged metal and in three separate pieces secured together and forming between them a guideway for the key by which the shoe may be connected with said head. The brake-shoe head comprises a metal face-plate in one integral piece and a back composed of two pieces riveted to said face-plate and forming at their meeting portions suitable jaws or flanges for connection with the brake beam. The face-plate may be formed of cast steel, but I preferably construct the same from forged metal.

The invention will be fully understood from the detailed description hereinafter presented, reference being had to the accompanying drawings, in which:

Figure 1 is a side elevation of a brake-shoe head constructed in accordance with and embodying my invention; Fig. 2 is a horizontal section through a portion of the same on the dotted line 22 of Fig. 1; Fig. 3 is a detached vertical section through a portion of the same on the dotted line 3-3 of Fig. 1; Fig. 4 is a back or outer elevation of the upper and lower parts which comprise the back of the head; Fig. 5 is an elevation of the face-plate of the head, taken from the inner side of the same; Fig. 6 is a vertical section of the same on the dotted line 66 of Fig. 5; Fig. 7 is a detached side elevation of a modified construction of the upper back section of the head; and Fig. 8 is a horizontal section of the same on the dotted line 88 of Fig. 7, Fig. 8 also indicating the brake-shoe and its securing key in position.

In the drawings, referring to Figs. 1. to 6 inclusive, the brake-shoe head shown comprises a metal faceplate 15 and a back composed of the upper and lower forged metal sections numbered 16, 17-, respectively, whose adjacent portions at about the center of the head are formed into flanges or jaws 18 to engage the brake beam, not shown, by which the heads are carried and which is of usual character. The face-plate 15 preferably of lorged metal, is of substantially uniform width and formed at about its transverse middle portion with a box-loop 20 containing in its upper and lower ends the slots 21 for the usual securing key utilized for connecting the brake shoe to the head. At the inner end of the box-loop 20 are the upwardly and downwardly extending integral lips 22 which, with the surface afl'orded by the inner end of said loop, create an extended bearing surface for the flange ot' the body beam held between the jaws 18, the outer ends of said lips 22 being preferably bent laterally to pass upon the edges of said flange. At its upper and lower ends the face-plate 15 is provided with integral box-loops 23 which afford housings for the end portions of the securing key and tie together the bifurcated outer end portions of said face-plate. The box-loops 23 extend laterally in a di rection toward the back of the head, and may constitute abutments [or the upper and lower ends of said back, as hereinafter explained. The face-plate 15 is formed above and below the box-loop 20 with inwardly projecting shoulders 24, 25, the shoulder 24 facing which at each side of said box-like portion 32 are riv.

eted to the face-plate 15. The flanges 34 extend downwardly from the upper end of the section 16 nearly to the upper end of the box-loop 20, and thence turn inwardly and downwardly and finally merge into the upper jaw 18, said flanges 34 passing outwardly around the box-loop 20 so as to create a suitable space for the body-beam. The upper portions of the flanges 34 contain the aforesaid shoulders 26 to abut against the shoulder 24 formed on the face-plate l5, and the upper end of the head-section 16 is in close relation to the upper end loop 23. The shoulders 24, 26 cooperate to form a stop to resist any upward thrust which might come against the head section 16 and tend to shear the rivets 35 securing said section to said faceplate. The loop 23 at the upper end of the plate 15 may also serve as a stop to resist any upward thrust of the upper head section 16. The shoulders 24, 26 also operate to resist any down thrust that might come' upon the face-plate 15 tending to move it downwardly on the back sections of the head and shear the rivets 35.

The special construction of the upper head section 16 is of great advantage due to its strength and ease of manufacture. The part 33 of double thickness extending centrally along the outer side of the box-like portion 32 adds greatly to the strength of the section as a whole and enables said section to present a well defined keyway through the portion 32 for the customary securing key. In the part 33 of the head section 16 I preferably form an eye 36 for a hanger of usual type, and in order to prevent the wear of the hanger on the section. 16 and to further tie the two thicknesses of said part together, I insert a wearing plate througlrthe upper portion of the eye 36 and bend the ends of same upwardly at each side and over the top edges of the part 33, as shown in Fig. 3, said wearing plate, numbered 37, serving to receive the lower end' of the usual hanger, to prevent the wear of the hanger against any part of the head section 16 and to strengthen said section. The novel features of the head section 16 reside in that formation thereof presenting the part 33 of two thicknesses, boxlike portion 32, and flanges 34, the latter having the shoulders 26 and the part 33 having the eye 36 and wearing plate 37. I deem it advisable to take the wear of the hanger from off the head proper and place it on a separate piece 37, which upon being worn out may be renewed. In Figs. 7 and 8 I illustrate a modification of the upper head section, in which the part 33 of double thickness is omitted to the extent of carrying the outer portions of the box formation 32 of Fig. 1 outwardly on parallel lines, whereby the outer section of the head instead of being formed of two closely contacting plates is formed of two plates 38 separated from each other by a definite space 39. The eye for the brake hanger is formed in the sides 38 of the modification shown in Figs. 7 and 8 and the metal at said eye instead of being entirely removed, is turned inwardly, as shown in Fig. 8, forming flanges 40, these flanges being of the character shown in my pending application for Letters Patent No. 345,093

filed November 26, 1906. Through the eye formed through the walls 38 is passed a metal sleeve 41 whose outer edges are flanged over on the sides of said walls 38, whereby they aid in tying said walls together while the body of said sleeve affords abundant wearing surfaces for the hanger and prevents the hanger from wearing upon the head section. The wearing plate 37 shown in Figs. 1 and 3 will preferably be used when the upper head section has the part 33 of narrow thickness, but when the walls of the head section are separated from each other, as shown in Fig. 8, the wearing plate, instead of being in the form of a strip of metal, as 37, will be of the construction shown in Fig. 8. The modified construction shown in Figs. 7 and 8 will also possess the shoulders 26, flanges 34 and jaw 18, represented in Fig. 1. The lower back-section 17 also comprises a vertical box-like portion 42 and laterally extending flanges 43 whose lower portions engage the face-plate 15 and are riveted thereto. The flanges 43 above their lower portions which engage the face plate 15, extend outwardly from the plate and thence turn upwardly and finally merge into the lower jaw 18. The lower portion of the boxlike section 42 extends downwardly into near relation to the lower loop 23 and affords a continuation of the keyway through the head. The shoulders 27 hereinbefore referred to are formed in the flanges 43 and said shoulders, cofiperating with the shoulder 25 on the face-plate, resist any upward thrust of said plate or downward thrust of said section 17 tending to shear the rivets 44 by which said section is secured to said plate. The lower box-loop 23 may also be in close relation to the lower end of the section 17 and utilized as a stop to resist down-thrust of said section or upthrust of said plate, the same as the upper box-loop 23 may be utilized as a stop to resist downthrust of the face-plate 15 or up-thrust of the upper section 16.

The head constructed as above described is particularly strong and durable and convenient of use. The jaws 18 are illustrated as being in a form to receive the end of a structural beam. usually of I-shape, but it is to be understood that the invention is also applicable to the varying characters of structural beams used in brake mechanism and also to trussbeams. The prevention of the wearing of the hanger, especially a pot-hook hanger, on the upper vertical narrow flange-like portion of the head is of advantage whether the head is of forged or cast metal. The eye in cast heads is near the upper edge thereof and only a limited thickness of metal is left above the eye to sustain the head and save it from falling to the track.

The shoulders 24, 25 on the face-plate 15 and the co6perating shoulders 26, 27 on the upper and lower back sections 16 17, all said shoulders being beyond the box-loop 20, are of special advantage in preventing the shearing of the rivets 35. 44. Two-part heads, such as the one shown, and one-piece cast heads of the kind commonly employed have their weakest line through their horizontal middle portions where they are completely or partly divided to pass upon the end of the body-beam, and the upper and lower sections .or portions of these heads are liable to yield backwardly when the brakes are applied, especially if the shoe does not accurately fit the wheel or has become thin or irregularly worn. Any yielding or springing backwardly of the upper and lower sections of the head not only denotes inefficiency but in heads having riveted face-plates results in a shearing action on the rivets securing such plates. Both the upper and lower sections of the head may yield backwardly when the brakes are applied or either of said sections may thus yield backwardly, according to the conditions that may exist. This backwardly yielding or springing action of the upper and lower head-sections and the resulting shearingaction on the rivets cannot be prevented by socketing the box-loop of the face-plate in the head. although such socketing is a benefit and prevents general endwise movement of the face-plate and head on each other. I therefore provide the shoulders 24, 26 above the box-loop 20 to prevent the yielding backwardly of the upper section of the head and the shoulders 25, 27 below said loop to prevent the lower section of the head from springing backwardly. The presence of the shoulders 24, 26'and 25, 27, or their equivalents, above and below the boxloop 20 aids in preventing general endwise movement of the head and face-plate on each other and the consequent shearing of the rivets, and also and more especially the springing backwardly of the upper and lower sections of the head, which action in said sections would create endwise movement of the sections and face-plate on each other but of a different character irom general endwise movement of said parts one on the other.

What I claim as my invention and desire to secure by Letters Patent, is:

l. A brake-shoe head comprising a face-plate and a back riveted thereto, said face-plate and back having cooperating shoulders above and below their middle portions to resist the springing backwardly of the upper and lower sections of the head; substantially as set forth.

2. A brake-shoe head comprising a face-plate having a box-loop for the securing key and a back forming a keyway in line with said loop and riveted to said plate, said plate and back having above and below said loop cooperating shoulders to resist the springing backwardly of the upper and lower sections of the head; substantially as set forth.

3. A brake shoe head comprising a face-plate and a back forming a key-way and seated against and riveted to said plate, said back and plate having coiiperating parts above and below their middle portions to resist the springing backwardly of the upper and lower sections of the head and the shearing of the rivets thereby; substantially as set forth.

4. A brake-shoe head comprising a face-plate and a back forming a key-way and seated against and riveted to said plate, said plate and back having above their middle portions cooperating parts to resist the springing backwardly of the upper section of the head and the shearing of the rivets securing said section to the face-plate; substantially as set forth.

5. A brake-shoe head comprising a forged metal back wherein is formed a key-way, and a face-plate carried thereby and adapted to receive the brake-shoe and its securing key, said back in its upper portion having opposite walls wherein is formed corresponding holes to constitute the eye for the brake-hanger, and a wearing plate being secured in said eye and bent upon the sides of said walls; substantially as set forth.

6. A brake-shoe head comprising a forged metal back wherein is formed a key-way, and a face-plate carried thereby and adapted to receive the brake-shoe and its securing key, said back in its upper portion having opposite walls wherein is formed corresponding holes to constitute the eye for the brake-hanger, and a wearing plate being secured in said eye and bent upon the sides of said walls and over the upper edges of the same; substantially as set forth.

7. A brake-shoe head comprising a forged metal back wherein is formed a key-way, and a face-plate carried thereby and adapted to receive the brake-shoe and its securing means, said back in its upper portion having opposite vertical walls pressed together to form a double thickness; substantially as set forth.

8. A brake-shoe head comprising a forged metal back wherein is formed a key-way, and a: face-plate carried thereby and adapted to receive the brake-shoe and its securing means, said back in its upper portion having opposite vertical walls pressed together to form a double thickness and apertured to create an eye for a brake-hanger; substantially as set forth.

9. A brake-shoe head comprising a forged metal back wherein is formed a key-way, and a separate face-plate secured thereto and having a box-loop entered in between the end portions of said back and slotted in line with said key-way, the upper part of said back having a vertical box-like portion, flanges extending therefrom ,to engage said face-plate and a vertical section extending along said box-like portion and composed of two thicknesses of the metal set inwardly toward each other from the outer edges of said box-like portion; substantially as set forth.

10. A brakeshoe head comprising a forged metal back wherein is formed a key-way, and a face-plate secured thereto and adapted to receive the brake-shoe and its securing key, said back having flanges to engage said faceplate and an outer vertically extending portion formed of opposite walls pressed together to create a double thickness; substantially as set forth.

11. A brake-shoe head adapted to receive a brake-shoe and its securing key, said head in its upper portion having an eye to receive a hanger and a plate in said eye for taking the wear of the hanger from the head and bent at its ends for fastening the same; substantially as set forth.

12. A brake-shoe head comprising a metal back and a face-plate secured thereto and adapted to receive a brakeshoe, said back being provided in its upper portion with an eye to receive a brake-hanger and with a metal plate in said eye for taking the wear of the hanger from said head and bent at its ends for fastening the same; substantially as set forth.

13. A brake-shoe head having in its upper portion a vertical flange-like portion having an eye for a brakehanger and provided in said eye with a plate lapping upwardly upon the sides of said portion to take the wear of said hanger; substantially as set forth.

14. A brake-shoe head comprising a face-plate and a back forming a key-way and seated against and riveted to said plate, said plate and back having below their middle portions cooperating parts to resist the springing backwardly of the lower section of the head and the shearing of the rivets securing said section to the face-plate; substantially as set forth.

15. A brake shoe head having in its upper portion an eye for a brake-hanger, and a plate in said eye and lapping upwardly therefrom to take the wear of said hanger; substantially as set forth.

Signed at New York city, and State of New York, this in the county of New York, 23d day of July, A. D. 1907.

SETH A. CRONE.

Witnesses ARTHUR MARION, CHAS. C. GILL. 

